mirror of
https://github.com/cc65/cc65.git
synced 2024-06-08 15:29:37 +00:00
53dd513176
which included commits to RCS files with non-trunk default branches. git-svn-id: svn://svn.cc65.org/cc65/trunk@3 b7a2c559-68d2-44c3-8de9-860c34a00d81
39 lines
851 B
C
39 lines
851 B
C
/*
|
|
* _6525.h
|
|
*
|
|
* Ullrich von Bassewitz, 22.09.1998
|
|
*
|
|
* Internal include file, do not use directly.
|
|
*
|
|
*/
|
|
|
|
|
|
|
|
#ifndef __6525_H
|
|
#define __6525_H
|
|
|
|
|
|
|
|
/* Define a structure with the 6525 register offsets. The shadow registers
|
|
* (if port C is unused) are currently not implemented, we would need a
|
|
* union to do that, however that would introduce an additional name.
|
|
*/
|
|
struct __6525 {
|
|
unsigned char pra; /* Port register A */
|
|
unsigned char prb; /* Port register B */
|
|
unsigned char prc; /* Port register C */
|
|
unsigned char ddra; /* Data direction register A */
|
|
unsigned char ddrb; /* Data direction register B */
|
|
unsigned char ddrc; /* Data direction register C */
|
|
unsigned char cr; /* Control register */
|
|
unsigned char air; /* Active interrupt register */
|
|
};
|
|
|
|
|
|
|
|
/* End of _6525.h */
|
|
#endif
|
|
|
|
|
|
|